Possible Clues:

• Reportedly stuff in office cupboard's gathering dust maybe
• Fixed position with upcoming young artist
• Fixed terminus on a railway
• Still writing equipment being discussed
• Still in post on a railway
• Still where one might find a train -- a railway!
• Still writing stuff, by the sound of it
• Inert
• I express gratitude? Not I, disrupted by start of action aboard Southern railway, immobile
• Still in position next to a railway